Emeritus Professor Geoffrey Brennan was an Australian philosopher who held professorial positions at ANU, University of North Carolina, Duke University and Virginia Tech. Originally trained as an economist, he worked at the intersection of economics, politics and philosophy and played a major role in the development of interdisciplinary 'PPE' research. He was Director of the Research School of Social Sciences at ANU from 1991 to 1996. He was made a Fellow of the Australian Academy of Social Sciences in 1987 and was awarded an Honorary Doctorate by the University of St. Gallen in 2002.